I've got an old Beacon Line crane. Basically just a big round pole that bolts to the floor and an I beam arm that sticks out 90 degrees about 10 ft. up. Anyone ever seen one of these? On the I beam, you can put a trolley to run in and out and put your choice of chain hoist on it. Pretty retro item....I can find absolutely nothing about them online. Rocky
You can still get these type of cranes new. This is a Gorbel. Installed in our shop @ 4 years ago. You can't just 'bolt' it to the floor though. A hole needs to be dug down, rebar and studs for the crane base installed and then filled back with concrete.